146 lines
4.7 KiB
C
146 lines
4.7 KiB
C
/****************************************************************************
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* netutils/netlib/netlib_setdripv4addr.c
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*
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* Copyright (C) 2007-2009, 2011, 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#if defined(CONFIG_NET_IPv4) && CONFIG_NSOCKET_DESCRIPTORS > 0
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#ifdef CONFIG_NET_ROUTE
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# include <net/route.h>
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#endif
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#include "netutils/netlib.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netlib_set_dripv4addr
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*
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* Description:
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* Set the default router IPv4 address
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*
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* Parameters:
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* ifname The name of the interface to use
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* ipaddr The address to set
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*
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* Return:
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* 0 on success; -1 on failure
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*
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****************************************************************************/
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int netlib_set_dripv4addr(FAR const char *ifname,
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FAR const struct in_addr *addr)
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{
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int ret = ERROR;
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#ifdef CONFIG_NET_ROUTE
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struct sockaddr_in target;
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struct sockaddr_in netmask;
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struct sockaddr_in router;
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memset(&target, 0, sizeof(target));
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target.sin_family = AF_INET;
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memset(&netmask, 0, sizeof(netmask));
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netmask.sin_family = AF_INET;
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router.sin_addr = *addr;
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router.sin_family = AF_INET;
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#endif
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if (ifname && addr)
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{
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int sockfd = socket(PF_INET, NETLIB_SOCK_TYPE, 0);
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if (sockfd >= 0)
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{
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FAR struct sockaddr_in *inaddr;
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struct ifreq req;
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/* Add the device name to the request */
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strncpy(req.ifr_name, ifname, IFNAMSIZ);
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/* Add the INET address to the request */
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inaddr = (FAR struct sockaddr_in *)&req.ifr_addr;
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inaddr->sin_family = AF_INET;
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inaddr->sin_port = 0;
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memcpy(&inaddr->sin_addr, addr, sizeof(struct in_addr));
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ret = ioctl(sockfd, SIOCSIFDSTADDR, (unsigned long)&req);
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#ifdef CONFIG_NET_ROUTE
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if (OK == ret)
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{
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/* Delete the default route first */
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/* This call fails if no default route exists, but it's OK */
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(void)delroute(sockfd,
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(FAR struct sockaddr_storage *)&target,
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(FAR struct sockaddr_storage *)&netmask);
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/* Then add the new default route */
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ret = addroute(sockfd,
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(FAR struct sockaddr_storage *)&target,
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(FAR struct sockaddr_storage *)&netmask,
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(FAR struct sockaddr_storage *)&router);
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}
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#endif
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close(sockfd);
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}
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}
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return ret;
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}
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#endif /* CONFIG_NET_IPv4 && CONFIG_NSOCKET_DESCRIPTORS */
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